Keyless Insertion Locking System and Method

ABSTRACT

The present invention, in a non-limiting example embodiment provides a locking apparatus and method for securing locking hardware without the use of a key. In an example embodiment, the apparatus comprises at least a keyless insertion rotatable disk-style, barrel locking apparatus that, in a locked state can be inserted into a securing device without first unlocking, and then, thereafter, locking after insertion. In a nonlimiting example embodiment, unlocking and re-locking requires a key. The present invention, in an example embodiment, also provides features that allow the locking apparatus to enter and exit multiple apertures without requiring a key.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of application Ser. No. 13/842,933,filed Mar. 15, 2013, which is a continuation of application Ser. No.13/070,456, filed Mar. 23, 2011, which claims the benefit of U.S.Provisional Application No. 61/316,826 filed on Mar. 23, 2010, and U.S.Provisional Application No. 61/316,851 filed on Mar. 24, 2010.

All written material, figures, content and other disclosure in each ofthe above-referenced applications is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

The present invention relates generally to a locking apparatus and morespecifically it relates to a locking system, apparatus and method forfostering ease of installation of various securing devices, as well ascontrolling access and preventing unauthorized access to such varioussecuring devices used in, for example, the gas, water and electricutility services industries, and those used in other suitable industriesas well and it relates to other aspects features as well as providedherein.

Electrical service providers generally deliver electricity to theircustomers via power lines buried underground or distributed along polesor towers overhead. The provider's power lines are usually distributedfrom a power generation station to numerous sets of customer lines, sothat customers can then use the power to satisfy their variouselectrical needs. To measure delivered power so that customers can bebilled in proportion to their usage, service providers typicallyterminate their power lines at a customer's home or business facilitythrough a metered socket box, various designs for which are well known.Natural gas and water service providers deliver and meter services in asimilar method.

For example, one previously known electric meter box consists of twosets of electrical posts, with a provider's transmission lines beingconnected to one set of posts, and the customer's service lines to theother set. In order to measure the amount of electricity a customeruses, the meter box is configured to accept a watt-hour meter or anotherelectricity usage measurement device, which, when plugged into thesocket box, permits transmission of electricity from the provider to thecustomer and allows the amount of transmitted electricity to beaccurately measured, so that the provider can charge the customer forpower usage at an appropriate rate. The electrical service providersutilize many security apparatus to deter and prevent tampering with themeter. Typically, these security apparatus are locked with a barrellock. This is largely true also for utility service providers of naturalgas and water.

The present invention is a new type of barrel lock that in the lockedstate can be inserted into a securing device without first unlocking,and then, thereafter, locking after insertion. Unlocking and re-lockingrequires a key. The present invention is distinct from existing devisesand products because it can enter and exit multiple apertures withoutrequiring a key, which an enables a new method of locking with a keylessinsertion rotatable disk style barrel lock.

The present invention provides various features and advantages which areof notable value to the user such as for example, improvement in keymanagement and security of key access. It is common for the installationof security devices to be performed by contractors or employees who thenalso have control over the key(s), for example, to perform suchservices. If this activity could be performed without a key, then theutility company could much better manage key security. Current marketsolutions do not entirely address this problem. The present inventioncan work with electricity meter rings or enclosure lid locking devices,water or gas meter and transmission locking devices and many otherdevices because it can pass through multiple apertures without the useof a key.

There remains a need for an apparatus and method for easily securing atleast one structure or a plurality of structures, used with, forexample, a utility service enclosure, or more particularly, a watthourmeter box having a removable cover with the apparatus being adaptablefor use in various configurations.

Those of skill in the art will appreciate the example embodiments of thepresent invention which addresses the above needs and other significantneeds the solution to which are discussed hereinafter.

SUMMARY OF THE INVENTION

The present invention provides, in a non-limiting example embodiment,which will be described subsequently in greater detail, a system, methodand apparatus to secure a locking assembly or hardware without the useof a key.

To attain this, one non-limiting embodiment of the present inventioncomprises a locking apparatus configured in an example embodiment to bekeyless. As such, the use of the locking apparatus provides a new methodof locking without use of a key.

The locking apparatus, in an example embodiment, comprises a keylessinsertion rotatable cylinder lock and also a key with rotating elements.

In an example embodiment, the key is the same as that described in U.S.Pat. No. 4,742,703.

In another example embodiment, there is provided a keyless insertionbarrel lock (in some embodiments, a cylinder lock) with rotating lockingmechanisms.

In another example embodiment, there is provided a keyless insertioncylinder lock with rotating locking mechanisms and key with rotatingelements.

In another example embodiment, there is provided a locking assembly thatcan be installed without use of a key or any special tools.

In another example embodiment, there is provided a keyless insertionrotatable disk locking assembly that can be shipped to the customer inthe locked state and installed into a various types of locking deviceswithout requiring use of a key or any special tools, thereby, providingan increased level of security.

In another example embodiment, there is provided a keyless insertionrotatable disk locking assembly that can be shipped to the customer inthe locked state and installed into a variety of locking devices thatmay have multiple apertures of ingress and egress possibly requiringlocking members (or in some embodiments locking balls or ball bearings)to contract multiple times prior to full insertion and final lockingball expansion without requiring use of a key.

In another example embodiment, there is provided a locking methodenabling a user to receive and install a locked lock into variousdevices that may offer multiple apertures of ingress and egress possiblyrequiring locking balls to contract multiple times prior to fullinsertion and final locking ball expansion without requiring use of akey thereby providing an increased level of security.

In another example embodiment, there is provide a keyless insertionrotatable disk style barrel lock that simplifies and expedites theinstallation process by eliminating the need for an installation key.

In another example embodiment, there is provided a keyless insertionrotatable disk style barrel lock that can be made with or withoutanti-rotation features described in U.S. Pat. No. 7,213,424 which isincorporated by reference herein.

In another example embodiment, there is provided a keyless insertionrotatable disk style barrel lock for use with electric utility meterboxes.

In another example embodiment, there is provided a keyless insertionrotatable disk style barrel lock for use with electric utility meterrings.

In another example embodiment, there is provided a keyless insertionrotatable disk style barrel lock that can be integrated and retainedwithin a meter ring facilitating quick installation.

In another example embodiment, there is provided a keyless insertionrotatable disk style barrel lock that can be used by multiple serviceproviders and other users of barrel locks, particularly those require akeyless insertion lock to pass multiple apertures of ingress and egresspossibly requiring locking balls to contract multiple times prior tofull insertion and final locking ball expansion without requiring use ofa key.

In another example embodiment, there is provided a locking assembly thatcan be operated repeatedly.

In another example embodiment, there is provided a locking assembly thatcan be removed with a key. In another example embodiment, there isprovided means to prevent the locking assembly removal without a key.

In another example embodiment, there is provided a plunger style barrellock that may be installed without a key.

In another example embodiment there is provided a retaining pin that canbe installed when in the locked position.

In an example embodiment, which will be described subsequently ingreater detail, there is provided a barrel lock to secure at least onestructure or a plurality of structures, to prevent unauthorized access,for example, to secure a utility service enclosure, such as for example,a meter box having a removeable panel or lid.

The content and disclosure of each of the followingapplications/publications to the extent permitted are specificallyhereby incorporated by reference: U.S. Nonprovisional application Ser.No. 13/842,933, filed Mar. 15, 2013; U.S. Nonprovisional applicationSer. No. 13/070,456, filed Mar. 23, 2011; U.S. Nonprovisionalapplication Ser. No. 13/636,666 filed on Sep. 21, 2012; U.S. ProvisionalApplication No. 61/316,826 filed on Mar. 23, 2010; and U.S. ProvisionalApplication No. 61/316,851 filed on Mar. 24, 2010; InternationalApplication No. PCT/US2011/029688, filed Mar. 23, 2011; U.S. Pat. No.4,742,703; U.S. patent application Ser. No. 12/660,990 filed on Mar. 8,2010 (Attorney Docket No. PAT-013 CIPA); U.S. Pat. No. 7,213,424, Issuedon May 8, 2007 (Attorney Docket No. PAT-017 CIP1B (was PAT-FFF CIP1B));U.S. patent application Ser. No. 11/800,863 filed on May 7, 2007(Attorney Docket No. PAT-017 CIP1B).

Additionally, all written material, figures, content and otherdisclosure in each of the above-referenced applications, is herebyincorporated by reference. In addition, the instant application claimspriority as noted above.

There has thus been outlined, rather broadly, features of exampleembodiments of the invention in order that the detailed descriptionthereof may be better understood, and in order that the presentcontribution to the art may be better appreciated. There are additionalfeatures of example embodiments of the invention that will be describedhereinafter.

In this respect, before explaining at least one example embodiment ofthe invention in detail, it is to be understood that the exampleembodiments are not limited in its application to the details ofconstruction and to the arrangements of the components set forth in thefollowing description or illustrated in the drawings. Various exampleembodiments are capable of other further embodiments and of beingpracticed and carried out in various ways. Also, as emphasized, it is tobe understood that the phraseology and terminology employed herein arefor the purpose of the description and should not be regarded aslimiting.

To the accomplishment of the above and related objects, exampleembodiments of the invention may be embodied in the form illustrated inthe accompanying drawings, attention being called to the fact, however,that the drawings are illustrative only, and that changes may be made inthe specific construction illustrated.

Other aspects and advantages of the present invention will becomeobvious to the reader and it is intended that these aspects andadvantages are within the scope of the present invention.

These and other aspects, features, and advantages of example embodimentsof the present invention will become apparent from the drawings, thedescriptions given herein, and the appended claims. Further aspects arealso indicated herein in various example embodiments of the invention.However, it will be understood that the above-listed objectives and/oradvantages of example embodiments are intended only as an aid in quicklyunderstanding aspects of the example embodiments, are not intended tolimit the embodiments of the invention in any way, and therefore do notform a comprehensive or restrictive list of objectives, and/or features,and/or advantages.

BRIEF DESCRIPTION OF THE DRAWINGS

Various aspects, example embodiments and other example embodiments,features and attendant advantages of the embodiments of the inventionwill become fully appreciated as the same becomes better understood whenconsidered in conjunction with the accompanying drawings, and wherein:

FIG. 1 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the locking members (or in this example embodiment, balls 10) areexpanded, rotor stem 3 in the locked position and the biasing memberextended.

FIG. 2 is the same perspective view as FIG. 1 with case 1 hidden to showinternal components.

FIG. 3 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 10 are recessed, rotor stem 3 in the lockedposition and the biasing member retracted.

FIG. 4 is the same perspective view as FIG. 3 with case 1 hidden to showinternal components.

FIG. 5 is an exploded perspective view of a keyless insertion barrellock in accordance with an embodiment of the present invention.

FIG. 6 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 10 are expanded, rotor stem 3 in the lockedposition and the biasing member extended.

FIG. 7 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 10 are recessed, rotor stem 3 in the lockedposition and the biasing member retracted.

FIG. 8a is a perspective view of rotor stem of the keyless insertionbarrel lock.

FIG. 8b is a perspective view of rotor stem of the keyless insertionbarrel lock.

FIG. 9 is a perspective view of the rotor stem with biasing mean of thekeyless insertion barrel lock.

FIGS. 10a, 10b, 10c, 10d and 10e are cross-sectional views of a keylessinsertion barrel lock in accordance with an embodiment of the presentinvention. In this view, the lock is advanced to enter multipleapertures in receiving hardware which illustrates functional operationin one example embodiment. In FIG. 10a , the lock is approaching thefirst aperture with the rotor stem 3 in the locked position, the biasingmember is extended and balls 10 extended. In FIG. 10b , the lock isentering the first aperture with the rotor stem 3 in the lockedposition, biasing member slightly retracted and balls slightly receded.In FIG. 10c , the lock is entering the first aperture with the rotorstem 3 in the locked position, biasing member retracted and ballsslightly recessed. The balls are recessed into the lock case to enablekeyless insertion of locked lock. In FIG. 10d , the balls are extendedafter passing through second aperture with the rotor stem 3 in thelocked position and biasing member extended. In FIG. 10d , the balls areextended after passing through third aperture with the rotor stem 3 inthe locked position and biasing member extended. In each case, thelocked lock cannot be removed without state change from locked toun-locked.

FIG. 11 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the locking members (or in this example embodiment, balls 110) areexpanded, rotor stem 103 in the locked position and the biasing memberextended.

FIG. 12 is the same perspective view as FIG. 11 with case 101 hidden toshow internal components.

FIG. 13 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 110 are recessed, rotor stem 103 in the lockedposition and the biasing member retracted.

FIG. 14 is the same perspective view as FIG. 13 with case 101 hidden toshow internal components.

FIG. 15 is an exploded perspective view of a keyless insertion barrellock in accordance with an embodiment of the present invention.

FIG. 16 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 110 are expanded, rotor stem 103 in the lockedposition and the biasing member extended.

FIG. 17 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 110 are recessed, rotor stem 103 in the lockedposition and the biasing member retracted.

FIG. 18a is a perspective view of rotor stem of the keyless insertionbarrel lock.

FIG. 18b is a perspective view of rotor stem of the keyless insertionbarrel lock.

FIG. 19 is a perspective view of the rotor stem with biasing mean of thekeyless insertion barrel lock.

FIGS. 20a, 20b, 20c, 20d and 20e are cross-sectional views of a keylessinsertion barrel lock in accordance with an embodiment of the presentinvention. In this view, the lock is advanced to enter multipleapertures in receiving hardware which illustrates functional operationin one example embodiment. In FIG. 20a , the lock is approaching thefirst aperture with the rotor stem 103 in the locked position, thebiasing member is extended and balls 110 extended. In FIG. 20b , thelock is entering the first aperture with the rotor stem 103 in thelocked position, biasing member slightly retracted and balls slightlyreceded. In FIG. 20c , the lock is entering the first aperture with therotor stem 103 in the locked position, biasing member retracted andballs slightly recessed. The balls are recessed into the lock case toenable keyless insertion of locked lock. In FIG. 20d , the balls areextended after passing through second aperture with the rotor stem 103in the locked position and biasing member extended. In FIG. 20d , theballs are extended after passing through third aperture with the rotorstem 103 in the locked position and biasing member extended. In eachcase, the locked lock cannot be removed without state change from lockedto un-locked.

FIG. 21 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the locking members (or in this example embodiment, balls 210) areexpanded, plunger stem 203 in the locked position and the biasing memberextended.

FIG. 22 is the same perspective view as FIG. 21 with case 201 hidden toshow internal components.

FIG. 23 is a perspective view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 210 are recessed, plunger stem 203 in the lockedposition and the biasing member retracted.

FIG. 24 is the same perspective view as FIG. 23 with case 201 hidden toshow internal components.

FIG. 25 is an exploded perspective view of a keyless insertion barrellock in accordance with an embodiment of the present invention.

FIG. 26 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 210 are expanded, plunger stem 203 in the lockedposition and the biasing member extended.

FIG. 27 is a cross-sectional view of a keyless insertion barrel lock inaccordance with an embodiment of the present invention. In this view,the lock assembly balls 210 are recessed, plunger stem 203 in the lockedposition and the biasing member retracted.

FIG. 28a is a perspective view of plunger stem of the keyless insertionbarrel lock.

FIG. 28b is a perspective view of plunger stem of the keyless insertionbarrel lock.

FIG. 29 is a perspective view of the plunger stem with biasing mean ofthe keyless insertion barrel lock.

FIGS. 30a, 30b, 30c, 30d and 30e are cross-sectional views of a keylessinsertion barrel lock in accordance with an embodiment of the presentinvention. In this view, the lock is advanced to enter multipleapertures in receiving hardware which illustrates functional operationin one example embodiment. In FIG. 30a , the lock is approaching thefirst aperture with the plunger stem 203 in the locked position, thebiasing member is extended and balls 210 extended. In FIG. 30b , thelock is entering the first aperture with the plunger stem 203 in thelocked position, biasing member slightly retracted and balls slightlyreceded. In FIG. 30c , the lock is entering the first aperture with theplunger stem 203 in the locked position, biasing member retracted andballs slightly recessed. The balls are recessed into the lock case toenable keyless insertion of locked lock. In FIG. 30d , the balls areextended after passing through second aperture with the plunger stem 203in the locked position and biasing member extended. In FIG. 30d , theballs are extended after passing through third aperture with the plungerstem 203 in the locked position and biasing member extended. In eachcase, the locked lock cannot be removed without state change from lockedto un-locked.

Note that FIGS. 18-30 and 31-62 and descriptions related thereto,include various views related to the description and example embodimentsincluding certain members, components, structures, methodologies, andconfigurations in accord with possible embodiments of the invention.

While various example embodiments of the invention will be describedherein, it will be understood that it is not intended to limit theinvention to those embodiments. On the contrary, it is intended to coverall alternatives, modifications, and equivalents included within thespirit of the invention.

DETAILED DESCRIPTION OF THE INVENTION

Turning now descriptively to the drawings, in which similar referencecharacters may denote similar elements throughout the several views, theattached figures illustrate a locking apparatus for securing lockingdevices requiring a barrel lock with the locking apparatus, in anexample embodiment, comprising a key and a keyless insertion barrellock.

One aspect of the current invention comprises a method for retaining abarrel lock able to be inserted and removed from locking hardwarecapable of receiving a barrel lock. FIGS. 10a through 10e show anexample embodiment method for retaining a barrel lock. Referring to FIG.10 a barrel lock 1 is inserted into locking hardware 14. Referring toFIG. 10b this causes a retainer 10 to retract as a result of insertingthe barrel lock into the locking hardware 14. The retraction is a resultof the interaction between the retainer 10 and the locking hardware 14.When the barrel lock is inserted the retainer 10 is forced into recess 3f in retainer extender 3. Referring to FIG. 10e the retainer 10 isextended when in an inserted position as shown in FIG. 10e in thelocking hardware 14. The retainer 10 is prevented from retracting by theretainer extender 3 and specifically by surface 3 e, when a force isexerted on the barrel lock in a direction generally opposite thedirection in which the barrel lock was inserted by retainer extender 3.Another aspect of the invention comprises a barrel lock retainer forretaining a barrel lock in locking hardware capable of retaining abarrel lock such as a meter locking ring or ring-less meter lockinghardware or other locking hardware as known by those skilled in the art.A barrel lock 1 as shown in FIG. 1 comprises an example barrel lockretainer. The example barrel lock has a locked configuration thatprevents the barrel lock from being removed from the hardware in whichit is installed without the use of a proper key; and an unlockedconfiguration which allows removal of the barrel lock from the hardwarein which it is installed when unlocked with the proper key. Referring toFIG. 6, the example embodiment retainer comprises: a retractableretaining member 10 (in the current example a ball) and a retainingmember extender 3. The retaining member extender is configured to allowinsertion of the barrel lock when the lock is in a locked configurationas shown in FIG. 7 and prevent removal of the barrel lock in the lockedconfiguration as shown in FIG. 6. The retaining member extender 3 isconfigured to cooperate with the locking hardware to retract theretaining member 10 by allowing the retaining member to be urged intothe recess 3 f in the retaining member extender 3 when the lock isinserted into the hardware.

Another aspect of the present invention comprises a barrel lockinstallable in locking hardware and the barrel lock has a locked and anun-locked configuration. FIG. 26 shows an example barrel lock comprisinga retainer shown generally at 2000. The retainer comprises: a retainingmember 210, a biasing member 209 biased to exert a force on theretaining member 210 and a retainer extender 203. The retainer extenderhas a reduced cross-section shown generally at 203 f and is configuredto allow retraction of the retaining member 210 as shown in FIG. 27.When the retaining member is forced in a direction generally opposite tothe force exerted by the biasing member the retaining member 210 movesinto the recess at 203 f and retracts to allow the barrel lock to beinserted without the use of a key.

Another aspect of the invention comprises a retaining pin forinstallation in hardware capable of receiving a retaining pin as is wellknown by those skilled in the art. An example embodiment retaining pinis shown in FIG. 52. The example retaining pin has a lockedconfiguration as shown in FIG. 53 and an un-locked configuration asshown in FIG. 54. FIG. 55 shows the retaining pin in the locked positionwith the retaining members retracted as would occur when the retainingpin is inserted into the hardware. The retaining pin comprises: auni-directional retaining member shown generally at 2001 in FIG. 52. Theuni-directional retaining member is configured to interact with thehardware during insertion of the retaining pin when the retaining pin isin a locked configuration. During the interaction with the hardware, theretaining member retracts sufficiently to allow the barrel lock to beinserted as shown in FIG. 55. The retaining member is configured tointeract with the hardware during attempted removal of the retaining pinfrom the hardware when the retaining pin is in a locked configuration asshown in FIG. 53. The retaining member 804 is biased by the biasingmember 807 and 808 in a direction to allow retainer extender 803 toprevent retraction of the retaining member 804 sufficiently to preventthe barrel lock from being removed.

Referring generally to FIGS. 1-10, example embodiments of the presentinvention are illustrated. In various example embodiments, the barrellock may be used with a variety of types of hardware adapted to receivea barrel lock so as to secure a given locking device and may be usedsecure a numerous other types of locking devices or hardware. In anexample embodiment of the invention, the barrel lock is adapted for usewith various types of hardware capable of receiving a barrel lock asnoted. In one example embodiment, the barrel lock comprises a body, atleast one locking member and a biasing member for biasing the lockingmember into an extended mode. In other example embodiments, a pluralityof locking members are provided. When a sufficient external force isapplied to the at least one locking member, the locking member movesinto a retracted mode, such that at least a portion of the lockingmember is retracted into the body and such that the barrel lock may beinserted into the hardware (Hardware may be any of various types ofstructure or devices adapted for receiving a barrel lock. The barrellock is axially insertable in example embodiments as noted herein).

The following provides a description of an example embodiment of thelocking apparatus. The motion of locking members (or ball bearings 10),in this example embodiment, will be described longitudinally along theaxis of case 1 as proximal and distal relative to end cap 9; the motionof balls 10 will also be described radially relative to center axis ofcase 1. Also, in this example embodiment, to “recess”, “recede” or“retract” shall refer to travelling toward the case 1 axis and to“extend” shall refer to travelling away from the case 1 axis.

Referring to FIGS. 1 and 2, the locking assembly is shown with ballbearings 10 extended from inside case 1 through slots 30 on opposingsides of case. Ball position boundaries are partially defined by thefollowing elements of case 1: 1 a, 1 b, and slot 30 ends 1 c and 1 d.Retaining protuberances 1 a and 1 b restrain the balls within the lockassembly and present a physical boundary within which balls can recedetoward or extend from the case center axis in an example embodiment. Theball bearings (e.g., 10) track within the respective slotslongitudinally parallel with the case center axis and are bound by slot30 ends 1 c and 1 d.

The positioning of balls 10 is further constrained by the geometry ofrotor stem 3. Referring to FIG. 8, rotor stem 3 has four surfaces (3 a,3 b, 3 c, and 3d) controlling the position and movement (and behavior)of balls 10. In the present embodiment the rotor stem or retainerextender 3 has a recess 3 f, defined generally by surfaces 3 b, 3 c and3 d, for receiving the retaining members which in the present inventionare balls. Surface 3 c defines the boundary of recessing travel of theballs 10 so that the balls can recede toward access no further thansurface 3 c. Surface 3 d in cooperation with surface 1 d of slot 30defines the boundary of proximal longitudinal travel of ball 10. Surface3 a presents a hard bearing surface and interference with the ballmovement that prevents the balls from recessing.

Referring to FIG. 6, the balls 10 are shown at the most extended state.The balls are constrained by surface 3 a, surface 1 c of slot 30 andretaining protuberances 1 a and 1 b. At this most extended state, thespherical center of balls 10 remains within the lock case 1.Consequently, any effort to push the lock into and through an aperturewould generate (or render) forces both proximally longitudinal andradial toward center.

Referring to FIGS. 6 and 9, sleeve 13 and compression spring 13cooperatively biases balls 10 toward surface 1 c of slot 30. Sleeve 13bears on balls 10. Compression spring 13 permits translation of thesleeve along the case axis and biases toward a rest position at the mostextended position or state as described in FIGS. 1, 2 and 6.

When the keyless insertion lock is pushed into an aperture, resistance(or reaction forces) from the surfaces or walls creating the aperture,push against balls 10 and, thereby, urge balls 10 longitudinally towardthe proximal end of the case and inward toward the case axis. Surface 3a prevents recessing. However, when this reaction force overcomes thebias of spring 13, sleeve 12 retracts proximally so that balls 10 movealong surfaces 3 a. At junction of 3 a and 3 b along longitudinalmovement the in proximal direction, the balls can and do recede towardcase axis along surface 3 b. The balls become fully recessed whencontacting 3 c and, consequently, have no forces driving them furthertoward the axis. Coincidentally, the balls contact surfaces 1 d and 3 dpreventing further longitudinal travel. As shown in the figures,cooperative structures are provided to prevent travel; FIGS. 3, 4 & 7depict the component positions when balls 10 are fully retracted, whichenables free passage through an aperture.

Upon exiting the aperture, the bias of spring 13 and absence of outsideforces allows the balls 10 to reverse the ravel sequence described aboveand return to lowest energy position described in FIG. 6.

Pulling the lock back out of an aperture in the locked state is resistedby surfaces 1 c of slot 30 and 3 a of rotor 3. Consequently, the lockedlock allows entry into an aperture but prevents extraction withoutunlocking in view of the cooperative configuration and relationship ofthe locking apparatus components.

Other nonlimiting embodiments as well are contemplated within thepresent invention. Some possible alternate nonlimiting embodimentsinclude the following, but are not considered exhaustive. In one exampleembodiment, the compression spring 13 and sleeve 12 could be replacedand in many ways with various structures or different types of materials(flexible plastics, metals, resilient materials, or other suitablematerials). For instance, a variable pitch spring could eliminate theneed for sleeve 12. Or a leaf spring could be incorporated into therotor stem 3 so that the rotor stem could perform requisite functions ofsleeve 12, spring 13 and rotor stem 3. In another example embodiment, aleaf spring or other biasing mechanism could be incorporated in a sleeve12. In another example embodiment, an independent compression spring foreach ball 10 could be used. In another example embodiment, the biasingarrangement could be provided by an extension or leaf spring pulling thesleeve toward the distal end of the rotor stem. Other exampleembodiments, can include a single or multiple ball bearings 10 or othercomponents such as, for example, a leaf spring, urethane spring, o-ring.

Another example embodiment provides an apparatus adapted to be mountedto secure at least one enclosure. Other applications include use with ahasp, truck lock, disposable locks or in various environments andindustries. In an alternate embodiment, the invention could have aninverted configuration.

In another example embodiment, the sleeve 12 is equivalent to anymechanism that bears upon the balls 10 to urge to desired position ofrest. The spring 10 is equivalent to any mechanism that resist motionand biases balls to desired position of rest as described above.

In view of the above and FIGS. 1-20 and also referring to U.S. Pat. No.4,742,703, and FIG. 62 (see also FIG. 2 in U.S. Pat No. 4,742,703),another example embodiment is provided as noted below. The referencenumerals in FIG. 62 correlate with those as provided in theabove-referenced patent but, in other example embodiments of the presentinvention, the referenced structure may be combined with that shownabove in FIGS. 1-20 as noted.

In another example embodiment, when various types of locking hardwaremay be used comprising a rotation restricting stop surface, wherein thebarrel lock comprises: a body comprising a head and a shank connected tosaid head; at least one rotation restricting stop surface located onsaid body for interaction with the rotation restricting stop surface ofthe locking hardware; and at least one variable-radial-play andradially-retractable retainer having an acute retaining surface, whereinthe radial play allows the retainer to protrude through said body in afirst condition and retract into said body in a second condition.

As to a further discussion of the manner of usage and operation of thepresent invention and example embodiment herein, the same should beapparent from the description herein.

Referring generally to FIGS. 11-20, example embodiments of the presentinvention are illustrated. In various example embodiments, the barrellock may be used with a variety of types of hardware adapted to receivea barrel lock so as to secure a given locking device and may used securea numerous other types of locking devices or hardware.

In an example embodiment of the invention, the barrel lock is adaptedfor use with various types of hardware capable of receiving a barrellock as noted. In one example embodiment, the barrel lock comprises abody, at least one locking member and a biasing member for biasing thelocking member into an extended mode. In other example embodiments, aplurality of locking members are provided. When a sufficient externalforce is applied to the at least one locking member, the locking membermoves into a retracted mode, such that at least a portion of the lockingmember is retracted into the body and such that the barrel lock may beinserted into the hardware (Hardware may be any of various types ofstructure or devices adapted for receiving a barrel lock. The barrellock is axially insertable in example embodiments as noted herein).

The following provides a description of an example embodiment of thelocking apparatus. The motion of locking members (or ball bearings 110),in this example embodiment, will be described longitudinally along theaxis of case 101 as proximal and distal relative to end cap 109; themotion of balls 110 will also be described radially relative to centeraxis of case 1. Also, in this example embodiment, to “recess”, “recede”or “retract” shall refer to travelling toward the case 1 axis and to“extend” shall refer to travelling away from the case 1 axis.

Referring to FIGS. 21 and 22, the locking assembly is shown with ballbearings 110 extended from inside case 101 through slots 130 on opposingsides of case. Ball position boundaries are partially defined by thefollowing elements of case 101: 101 a, 101 b, and slot 130 ends 101 cand 101 d. Retaining protuberances 101 a and 101 b restrain the ballswithin the lock assembly and present a physical boundary within whichballs can recede toward or extend from the case center axis in anexample embodiment. The ball bearings (e.g., 10) track within therespective slots longitudinally parallel with the case center axis andare bound by slot 130 ends 101 c and 101 d.

The positioning of balls 110 is further constrained by the geometry ofrotor stem 3. Referring to FIG. 8, rotor stem 103 has four surfaces (103a, 103 b, 103 c, and 103 d) controlling the position and movement (andbehavior) of balls 110. Surface 3 c defines the boundary of recessingtravel of the balls 110 so that the balls can recede toward access nofurther than surface 103 c. Surface 103 d in cooperation with surface101 d of slot 130 defines the boundary of proximal longitudinal travelof ball 110. Surface 103 a presents a hard bearing surface andinterference with the ball movement that prevents the balls fromrecessing.

Referring to FIG. 16, the balls 110 are shown at the most extendedstate. The balls are constrained by surface 103 a, surface 101 c of slot130 and retaining protuberances 101 a and 101 b. At this most extendedstate, the spherical center of balls 110 remains within the lock case101. Consequently, any effort to push the lock into and through anaperture would generate (or render) forces both proximally longitudinaland radial toward center.

Referring to FIGS. 16 and 19, sleeve 112 and compression spring 113cooperatively biases balls 110 toward surface 101 c of slot 130. Sleeve112 bears on balls 110. Compression spring 113 permits translation ofthe sleeve along the case axis and biases toward a rest position at themost extended position or state as described in FIGS. 101, 102 and 106.

When the keyless insertion lock is pushed into an aperture, resistance(or reaction forces) from the surfaces or walls creating the aperture,push against balls 110 and, thereby, urge balls 110 longitudinallytoward the proximal end of the case and inward toward the case axis.Surface 103 a prevents recessing. However, when this reaction forceovercomes the bias of spring 113, sleeve 112 retracts proximally so thatballs 110 move along surfaces 103 a. At junction of 103 a and 103 balong longitudinal movement the in proximal direction, the balls can anddo recede toward case axis along surface 103 b. The balls become fullyrecessed when contacting 103 c and, consequently, have no forces drivingthem further toward the axis. Coincidentally, the balls contact surfaces101 d and 103 d preventing further longitudinal travel. As shown in thefigures, cooperative structures are provided to prevent travel; FIGS.13, 14 & 17 depict the component positions when balls 110 are fullyretracted, which enables free passage through an aperture.

Upon exiting the aperture, the bias of spring 113 and absence of outsideforces allows the balls 110 to reverse the ravel sequence describedabove and return to lowest energy position described in FIG. 6.

Pulling the lock back out of an aperture in the locked state is resistedby surfaces 101 c of slot 130 and 103 a of rotor 103. Consequently, thelocked lock allows entry into an aperture but prevents extractionwithout unlocking in view of the cooperative configuration andrelationship of the locking apparatus components.

Other nonlimiting embodiments as well are contemplated within thepresent invention. Some possible alternate nonlimiting embodimentsinclude the following, but are not considered exhaustive. In one exampleembodiment, the compression spring 113 and sleeve 112 could be replacedand in many ways with various structures or different types of materials(flexible plastics, metals, resilient materials, or other suitablematerials). For instance, a variable pitch spring could eliminate theneed for sleeve 112. Or a leaf spring could be incorporated into therotor stem 113 so that the rotor stem could perform requisite functionsof sleeve 112, spring 113 and rotor stem 113. In another exampleembodiment, a leaf spring or other biasing mechanism could beincorporated in a sleeve 112. In another example embodiment, anindependent compression spring for each ball 110 could be used. Inanother example embodiment, the biasing arrangement could be provided byan extension or leaf spring pulling the sleeve toward the distal end ofthe rotor stem. Other example embodiments, can include a single ormultiple ball bearings 10 or other components such as, for example, aleaf spring, urethane spring, o-ring.

Referring generally to FIGS. 21-30, example embodiments of the presentinvention are illustrated. In various example embodiments, the barrellock may be used with a variety of types of hardware adapted to receivea barrel lock so as to secure a given locking device and may used securea numerous other types of locking devices or hardware.

In an example embodiment of the invention, the barrel lock is adaptedfor use with various types of hardware capable of receiving a barrellock as noted. In one example embodiment, the barrel lock comprises abody, at least one locking member and a biasing member for biasing thelocking member into an extended mode. In other example embodiments, aplurality of locking members are provided. When a sufficient externalforce is applied to the at least one locking member, the locking membermoves into a retracted mode, such that at least a portion of the lockingmember is retracted into the body and such that the barrel lock may beinserted into the hardware (Hardware may be any of various types ofstructure or devices adapted for receiving a barrel lock. The barrellock is axially insertable in example embodiments as noted herein).

The following provides a description of an example embodiment of thelocking apparatus. The motion of locking members (or ball bearings 210),in this example embodiment, will be described longitudinally along theaxis of case 201 as proximal and distal relative to end cap 202; themotion of balls 210 will also be described radially relative to centeraxis of case 201. Also, in this example embodiment, to “recess”,“recede” or “retract” shall refer to travelling toward the case 1 axisand to “extend” shall refer to travelling away from the case 201 axis.

Referring to FIGS. 21 and 22, the locking assembly is shown with ballbearings 210 extended from inside case 201 through slots 230 on opposingsides of case. Ball position boundaries are partially defined by thefollowing elements of case 201: 201 a, 201 b, and slot 230 ends 201 cand 201 d. Retaining protuberances 201 a and 201 b restrain the ballswithin the lock assembly and present a physical boundary within whichballs can recede toward or extend from the case center axis in anexample embodiment. The ball bearings (e.g., 210) track within therespective slots longitudinally parallel with the case center axis andare bound by slot 230 ends 201 c and 201 d.

The positioning of balls 210 is further constrained by the geometry ofplunger stem 3. Referring to FIG. 28, plunger stem 203 has four surfaces(203 a, 203 b, 203 c, and 203 d) controlling the position and movement(and behavior) of balls 10. Surface 3 c defines the boundary ofrecessing travel of the balls 210 so that the balls can recede towardaccess no further than surface 203 c. Surface 203 d in cooperation withsurface 201 d of slot 230 defines the boundary of proximal longitudinaltravel of ball 210. Surface 203 a presents a hard bearing surface andinterference with the ball movement that prevents the balls fromrecessing.

Referring to FIG. 26, the balls 210 are shown at the most extendedstate. The balls are constrained by surface 203 a, surface 201 c of slot230 and retaining protuberances 201 a and 201 b. At this most extendedstate, the spherical center of balls 210 remains within the lock case201. Consequently, any effort to push the lock into and through anaperture would generate (or render) forces both proximally longitudinaland radial toward center.

Referring to FIGS. 26 and 29, sleeve 212 and compression spring 213cooperatively biases balls 210 toward surface 201 c of slot 230. Sleeve212 bears on balls 210. Compression spring 213 permits translation ofthe sleeve along the case axis and biases toward a rest position at themost extended position or state as described in FIGS. 21, 22 and 26.

When the keyless insertion lock is pushed into an aperture, resistance(or reaction forces) from the surfaces or walls creating the aperture,push against balls 210 and, thereby, urge balls 210 longitudinallytoward the proximal end of the case and inward toward the case axis.Surface 203 a prevents recessing. However, when this reaction forceovercomes the bias of spring 213, sleeve 212 retracts proximally so thatballs 210 move along surfaces 203 a. At junction of 203 a and 203 balong longitudinal movement the in proximal direction, the balls can anddo recede toward case axis along surface 203 b. The balls become fullyrecessed when contacting 3 c and, consequently, have no forces drivingthem further toward the axis. Coincidentally, the balls contact surfaces201 d and 203 d preventing further longitudinal travel. As shown in thefigures, cooperative structures are provided to prevent travel; FIGS.23, 24 & 27 depict the component positions when balls 210 are fullyretracted, which enables free passage through an aperture.

Upon exiting the aperture, the bias of spring 213 and absence of outsideforces allows the balls 210 to reverse the ravel sequence describedabove and return to lowest energy position described in FIG. 26.

Pulling the lock back out of an aperture in the locked state is resistedby surfaces 201 c of slot 230 and 203 a of plunger stem 203.Consequently, the locked lock allows entry into an aperture but preventsextraction without unlocking in view of the cooperative configurationand relationship of the locking apparatus components.

Other nonlimiting embodiments as well are contemplated within thepresent invention. Some possible alternate nonlimiting embodimentsinclude the following, but are not considered exhaustive. In one exampleembodiment, the compression spring 213 and sleeve 212 could be replacedand in many ways with various structures or different types of materials(flexible plastics, metals, resilient materials, or other suitablematerials). For instance, a variable pitch spring could eliminate theneed for sleeve 212. Or a leaf spring could be incorporated into theplunger stem 203 so that the plunger stem could perform requisitefunctions of sleeve 212, spring 213 and plunger stem 203. In anotherexample embodiment, a leaf spring or other biasing mechanism could beincorporated in a sleeve 212. In another example embodiment, anindependent compression spring for each ball 210 could be used. Inanother example embodiment, the biasing arrangement could be provided byan extension or leaf spring pulling the sleeve toward the distal end ofthe plunger stem. Other example embodiments, can include a single ormultiple ball bearings 210 or other components such as, for example, aleaf spring, urethane spring, o-ring.

Referring to FIGS. 8b, 18b and 28 c, and regarding the uni-directional,one way pass through features, anti-retraction interface geometry, innon-limiting example embodiments, the geometry of rotor stems 3, 103 andplunger stem 203 defines the one-way-pass-through behavior of the ballbearings during keyless insertion that enables uni-directional travel ofball bearings and anti-retraction of lock. When in the locked statesurface a resists the balls from receding into the case and ensuresanti-retraction of lock. When lock is pushed into a stationary apertureof sufficient size to allow entry of case while contacting ball bearingsand with sufficient force to overcome biasing means, the reactionaryforces of the aperture wall push the balls proximally toward surface d.Because the geometric center of the ball bearing remains always withinthe case, the aperture walls exerts a reaction force to the balls thatis necessarily tangential; thus, the balls are also pushed inward towardthe center axis of rotor stem. As the lock enters the aperture in akeyless operation, the balls travel proximally along surface a untilreaching surface b when it also begins to descend along a slope definedby angle β. Angle β is 45 degrees in this embodiment and could varysignificantly and remain operable but would require changes to othercomponents. The smaller the angle the longer slot 30, 130 and 230 mustbecome and shorter is preferable for multiple reasons: strength of casebody reduces as hole increases in size, the biasing mechanism mustaccommodate longer travel which may cause complications and importantlythe lock shaft would have to increase in length which would make itincompatible with existing locking devices. Angle β could increase by 20degrees and function, but the rotor stem would be weaker and the lockassembly would require a stronger biasing means to push the balls up thesteeper slope. As the lock continues to enter the aperture in a keylessoperation, the balls travel down slope b until reaching surface c, wherethe ball is fully recessed within the case at which point it is also incontact with surface d defined by angle α. Angle α is 45 degrees in thisembodiment and could vary significantly and remain operable, but wouldrequire changes to other components. A larger a would require extendingthe length of surface c and would weaken the rotor stem. A smaller awould not require any change but would also offer no benefit.

Note that each of the following, as well as the foregoing, providenon-limiting example embodiments or the invention: The followingdiscussion describes alternate embodiments of the means of urging theballs into the locked position and allowing the balls to recede into thecase during a keyless insertion. The FIGS. 1-30 describe exampleembodiments, and further, non-limiting example embodiments are providedas follows, as indicated. Variations of the following can be applied toeach example embodiment or alternatives.

Another example embodiment below refers to the following figures: FIG.31 is a perspective view of a keyless insertion lock with partialsection cut-away showing alternate biasing means leaf spring 401 androtor stem 3′; FIG. 32 is a perspective view of rotor stem 3′ withbiasing means 401 and ball bearings 10; FIG. 33 is a perspective view ofrotor stem 3′ with biasing means 401; FIG. 34 is a perspective view ofbiasing means 401; FIG. 35 is another perspective view of biasing means401. As illustrated, a stamped leaf spring design is provided whereinthe keyless insertion lock replaces a biasing means provided by bushing12 or 112 and spring 13 or 113 with a single leaf spring 401. Component401 as presented is formed from flat stock spring stainless steel. Inother embodiments, the component could also be formed from spring wire.Different materials with sufficient elasticity could be used. The simpledesign of this spring offers economic opportunity in the price sensitivemarket of the product. The base band 405 attaches to the rotor stem. Anembossment on the case interferes with rotational movement aboutlongitudinal axis of rotor stem and case to ensure positional alignmentwith slots 30. When balls are forced into recess during keylessinsertion, the leaf springs deflect to allow necessary travel of ballsalong path defined by rotor stem and case as described above. Rotor stem3′ is an alternate embodiment of rotor stem 3 or 13 that is modified toprovide movement space for deflecting spring. The shape of deflectingmembers 402 and 403 defined by angels δ and θ provides the necessarybiasing both distally and outwardly. These angles can range from 20 to60 degrees. The angles and the position of the bend defined by variable“d” are interdependent. Multiple variable value combinations willprovide effective forceful contact to ball bearings that will bias ballbearings to locked position while enabling recess and travel necessaryfor keyless insertion.

Another example embodiment below refers to the following figures: FIG.36 is a perspective view of a barrel lock in the locked condition inaccordance with multiple embodiments of the present invention. In thisview, the locked assembly balls 10 are extended with biasing means 501visible through slot 30 in case 1. FIG. 37 is a perspective view ofrotor stem 3″ of keyless insertion barrel lock with biasing means 501and ball bearings 10 in the locked position. FIG. 38 is a perspectiveview of the rotor stem 3″ of keyless insertion barrel lock with biasingmeans. FIG. 39 is a perspective view of the distal end of rotor stem 3″of keyless insertion barrel lock. FIG. 40 is a sectional perspectiveview of the distal end of rotor stem 3″ of keyless insertion barrellock. FIG. 41 is a perspective view of biasing means 501. Asillustrated, a wire leaf spring design is provided wherein a keylessinsertion lock replaces biasing means provided by bushing 12 or 112 andspring 13 or 113 with a single leaf spring 501. In this embodiment, 501is a formed spring wire; however, a functional equivalent could beformed from flat steel stock. In both cases, the component 501 is madeof stainless spring steel though other material could be used. Thesimple design of this spring offers economic opportunity in the pricesensitive market of the product. In the locked state, the ball bearings10 are biased by segment 504 to the extended and distal position withinslot 30. During keyless insertion the ball bearings 10 are fullyrecessed and move proximally within the lock case 1, the leaf spring 501is compressed into the rotor stem 3″ reliefs 502 to allow full travel ofthe balls 10. In the compressed state, the deflecting ends 504 move intorecess that ends at 503. Recess 502 also holds the biasing means inproper orientation relative to rotor stem 3″. The members 505 are formedto remain within 502 and deliver holding force to retain position andattachment to rotor stem 3″. Member 506 in cooperation with the distalend of rotor stem 3″ prevents longitudinal travel of 501 in the proximaldirection along the rotor stem 3″. Angle χ is 45 degrees in thisembodiment but could be implemented in a range of 15 to 75 degrees.

Another example embodiment below refers to the following figures: FIG.42 is a perspective view of distal end of a barrel lock in the lockedcondition in accordance with multiple embodiments of the presentinvention. In this view, the locked assembly balls 10 are extended withbushing 12′ visible through slot 30 in case 1.

FIG. 43 is a perspective view of rotor stem of keyless insertion barrellock with biasing means and ball bearings in the locked position.

FIG. 44 is a perspective view of the rotor stem of keyless insertionbarrel lock with biasing means. As illustrated, a cupped bushing designis provided wherein a bushing 12′ is an alternate embodiment of bushing12, 112 and 209 and performs the same functions. The cupped reliefs 601in bushing 12′ encompasses the ball bearings 10, 110 and 210. The shapeof the relief matches the radius of the ball bearings plus someclearance to allow a slip fit to permit the ball to actuate within case1, 101 or 201 and rotor stem 3 or rotor stem 103 or plunger stem 203.Bushing 12′ shrouds access to internal mechanics of the lock when thecupped relief 601 mates with the ball bearings. The benefits includeimproving reliability by reducing the possibility of debris entering thelock, which may hamper operation of keyless insertion or keyedoperation. Another potential benefit is reducing access to internalcomponents of lock, which inhibits nefarious tampering efforts todisable or retard proper lock functions.

Regarding another example embodiment including at least a pivot plunger,and referring also to FIGS. 45-51 generally, in one alternativeembodiment of invention is to replace ball bearings with a toggle. Inthe presented embodiment toggles are urged into the locked position by abiasing means as described in FIGS. 21-30. The plunger stem 603 supportsand positions a pivot pin 612. The toggles also have through holes thatmate with the pivot pin 612. A slot at the distal end of plunger stem603 accommodates the toggles that are free to move within slot 230 whileurged to the locked position by biasing means. When the lock is insertedinto an aperture, the toggles pivot upon the pin to recede with case201. Regarding another example embodiment including at least a pivot cutslot, and referring also to FIGS. 45-51 generally, in one alternativeembodiment cases 1, 101, and 201 provide an opening 30, 130 and 230 inwhich ball bearings articulate to enable keyless insertion of the lock.The opening can be manufactured in multiple ways. One alternativeembodiment is case 701 is a sloped angle on the proximal end of the slotto produce surface 701 d. Surface 701 c is normal to axis of case androtor stem. One possible method of producing the opening is milling ahole and pivoting the part relative to the cutting mill. A benefit ofthe sloped geometry is a reduced opening. A reduced opening minimizesthe necessary length of the ball retaining features 701 a and 701 b.Additionally, a smaller opening inhibits entry of debris into the lock,which may impair proper functioning or frustrate attempts to defeatproper operation. The sloped geometry may improve product reliability byimproving ruggedness when lock is abused or aggressively inserted intoan ill-fitting receptacle. The slope in this embodiment matches that ofthe ball path defined by the rotor stem, which is 45 degrees.

Another example embodiment below refers to the following figures: FIG.52 is a perspective view of locking pin in the locked condition. FIG. 53is a sectional view of locking pin in the locked condition. FIG. 54 is asectional view of locking pin in the unlocked condition. FIG. 55 is asectional view of locking pin with biasing members displaced and ballbearings recessed within case. FIGS. 52-55 generally, apply to a lockingpin, often called “quick release pins,” which typically require manuallypushing a button to actuate a locking member holding the ball bearingsfrom the lock position to allow the balls to recede into the pin bodyfor either insertion or extraction from a receptacle. This inventionenable insertion without manually actuating a locking member, but doesrequire actuation of locking member for extraction. Referencing FIG. 52,pin body 801 and handle 802 and ball bearings 804 resembles typicalquick release pin. The locking member 803 translates along axis definedby case 801. The end of locking member 803 protruding from handle 802 ispushed by an operator to manually unlock the pin by translating lockingmember recesses into alignment with ball bearings 804. FIG. 53 showsassembly in the locked condition and FIG. 54 shows the assembly in theunlocked position. Biasing means 805 causes the lock to be in the lockedposition without forceful actuation. The ball bearing 804 are held inposition relative to locking member by biasing members spring 808 andbushing 807. When pin is inserted into a receptacle without actuatinglocking member, the balls are pushed by reaction forces from receptacletoward handle along axis of pin body 801 and inward to enter intolocking member 803 recess.

Another example embodiment below refers to the following figures: FIG.56 is a perspective view of lock in the locked condition with rotor stemin the locked position. FIG. 57 is a sectional view of lock in thelocked condition with rotor stem in the locked position. FIG. 58 is asectional view of lock with rotor stem in the locked position andtoggles receded during keyless insertion. FIG. 59 is a sectional view oflock in the unlocked condition with rotor stem in the unlocked position.FIG. 60 is an isometric view of the rotor stem. FIG. 61 is an isometricview of the toggle (Note items 1000 series. Case 1001, Case pivot holes1002, Case slot 1003, Toggles 1010, Toggle holes 1011, Toggle camsurface 1007, Bushing 1012, Spring 1013, Rotor Stem 1004, Rotor Stem camsurface 1005, Pivot pin 1006). This embodiment of the invention utilizestoggles 1010 in a rotary lock instead of ball bearings. The toggles 1010rotates about a pivot pin 1006 and within slot 1003 of case 1001. Thetoggles 1010 recede into housing during keyless insertion and recoverinto locked extended position after passing through receiver aperture byurging from a biasing means provided by bushing 1012 and spring 1013.The pivot pin 1006 passes through holes 1002 and 1011 in the lock case1001 and toggles 1010. A rotating rotor stem 1004 pushes the toggles1010 into an unlocked receded position when turned about axis defined bycase 1001. The actuation of the toggles 1010 by rotor stem 1004 iscaused by a cam surface on the rotor stem 1005 bearing against togglesurface 1007. When the rotor stem 1004 is turned to the locked position,contact between surfaces 1007 and 1005 is absent and the toggles freelyreturn to locked position by urging of biasing means.

While the present invention has been shown in example embodimentscomprising disk tumbler barrel locks, it may also be used in many othertypes of barrel locks as well as retaining pins and other devices whereretractable retaining members would be useful.

A further description, and in some instances a summary outline, isprovided identifying various aspects of example embodiments inconjunction with FIGS. 1-62, as applicable, and related descriptionswith regard to various views of embodiments including certain members,components, structures, and configurations in accord with possibleembodiments of the invention. It should be recognized that regardingcost issues, in an example embodiment, the present invention addresses:the speed of installation, in that the lock is field installable withouta key or other tool and may be pushed in to install, with auni-directional ball release; a lower cost labor pool, in that there isless concern over worker honesty (i.e., in view of the above, as noted,the lock is field installable without a key or other tool and may bepushed in to install, with a uni-directional ball release); the lowerskill requirement in regards to simple operation (i.e., in view of theabove, push in to install, with a uni-directional ball release (referredto herein as a “pushed in to install” aspect)): less training, again, inview of the simple operation (i.e., “pushed in to install”), and asnoted, again, the lock is field installable without a key or other tooland may be pushed in to install, with a uni-directional ball release; nokey tracking required for installers (i.e., again, in view of the above,as noted, the lock is field installable without a key or other tool andmay be pushed in to install, with a uni-directional ball release);cannot be locked inadvertently (it can be inserted through multiplelocking layers (with a uni-directional ball release)).

In addition, it should be recognized that regarding cost issues, in anexample embodiment, the present invention addresses manufacturing costsrelated to: simpler components being required (i.e., simpler spring),simpler assembly (fewer components) in that components drop in place(i.e., no rotation orientation required, no special fixtures, no specialtools) and in that the lock does not have to be shipped in an openedorientation.

It should be further recognized that regarding reliability issues, in anexample embodiment, the present invention provides: better assurancethat the lock is properly installed in that audible or tactile feedbackinforms the user when the lock is installed correctly (e.g., audibleclick, tactile click) and in that the lock can be fully inserted to aproper locking position without locking in the wrong position; selflocking in that the locking members are biased to a locking positionwith the uni-directional ball release feature; the lock is not subjectto pre-mature locking before installation (i.e., in view of theuni-directional ball release); a reduced tolerance requirement regardingthe position of the locking ball engagement with the rotor stem, in thatthe holding surface engagement created for engagement with balls islarger and the balls are allowed to travel in an axial direction toenter the notch in the rotor stem and further that the ball hole isobround; the rotor stem is better located in the shaft of lock (e.g.,sleeve centralizes rotor stem); elimination of ball sticking in lockedposition.

In addition, it should be recognized that regarding ease of use, in anexample embodiment, the present invention fosters user friendliness inthat: the lock can be installed easily with gloves (e.g., “pushed in toinstall” feature); an audible or tactile feedback informs the user whenthe lock is installed correctly (e.g., audible click, tactile click); itis simple to operate and provides one-handed installation (i.e., in viewof the above, as noted, pushed in to install, with a uni-directionalball release).

It should also be recognized that regarding application specificperformance, in an example embodiment, the present invention fostersbetter security in that; there is better key control; the lock is fieldinstallable without a key or other tool (i.e., in view of the above, asnoted, pushed in to install, with a uni-directional ball release); thelock can be used in many different types of hardware and in many typesof barrel locks; the lock provide tamper resistance.

Additionally, it will also be appreciated that various problems wererecognized and resolved to reach a workable design related to: shapingthe rotor stem to receive and hold the locking balls; the angle of thenotches on the rotor stem; balancing abruptness with the length on theentry side of the notch and coordinating and configuring the angle to betangent with the ball when retracted and at the upper limit of theobround slot; captivation of balls; shaping of the ball hole opening;smoothness of insertion involving better location of the rotor stem inthe shaft of the lock (e.g., sleeve centralizes rotor stem) and allowingthe locking balls to travel in the axial direction to enter the notch inthe rotor stem (with the obround ball hole); choosing spring forces tobalance extension of the balls with resistance to insertion.

It should be noted that in an example embodiment, the invention includesat least the following components: case (or rotor-lock case); rotor (orrotor-lock rotor); rotor stem (or rotor-lock stem); top tumbler; fence;base guard; spacer; code tumbler; end cap; ball bearing; weather seal(SI, rubber); sleeve or bushing (which is adapted to bear on lockingballs to bias expansion); spring (compressed-uncompressed); samplerreceiver. It should be noted that in another example embodiment relatedto a plunger lock configuration, the invention includes at least thefollowing components: plunger case; plunger cap; plunger stem; plungerdecoy; plunger lock spring; weather seal, SI, rubber; o-ring; plungersnap spring; plunger bushing; BB; sampler receiver. It should be notedthat in example embodiments, the invention provides variousconfigurations related to and including at least: case is upset, ballretaining, left; case is upset, ball retaining, right; case, slot,proximal end; case, slot, distal; case, slot; rotor stem, notch angle,proximal; rotor stem, distal. It should also be noted that in otherexample embodiments, the invention provides alternates such as a: leafspring, alternate biasing means; proximal bend member; distal bendmember; extension (leaf) member; band; proximal angle; distal angle;wire leaf spring, alternate biasing means; rotor stem relief pocket;rotor stem relief pocket, end; wire leaf spring, deflecting member; wireleaf spring, vertical member; wire leaf spring, horizontal end member;angle of deflecting member; cupped recess in alternate bushing; toggles;alternate plunger stem; toggle pivot pin; case; handle; plunger stem;ball bearings; plunger spring; bushing, biasing means; spring, biasingmeans; case upset, ball retaining, left, same, but shorter; case upset,ball retaining, right, same, but shorter; case, slot, proximal end,same; and case, slot, distal end, angled.

With respect to the above description then, it is to be realized thatthe optimum dimensional relationships for the parts of the invention, toinclude variations in size, materials, shape, form, function and mannerof operation, assembly and use, are deemed readily apparent and obviousto one skilled in the art, and all equivalent relationships to thoseillustrated in the drawings and described in the specification areintended to be encompassed by the present invention.

Therefore, the foregoing is considered as illustrative only of theprinciples of the invention. Further, since numerous modifications andchanges will readily occur to those skilled in the art, it is notdesired to limit the invention to the exact construction and operationshown and described, and accordingly, all suitable modifications andequivalents may be resorted to, falling within the scope of theinvention.

The foregoing disclosure and description of embodiments of the inventionis illustrative and explanatory of the above and variations thereof, andit will be appreciated by those skilled in the art, that various changesin the design, organization, order of operation, means of operation,equipment structures and location, methodology, the use of mechanicalequivalents, such as different types of other locking hardware,receiving hardware, fasteners and locking devices than as illustratedwhereby different steps may be utilized, as well as in the details ofthe illustrated construction or combinations of features of the variouselements may be made without departing from the spirit of theembodiments of the invention. As well, the drawings are intended todescribe various concepts of embodiments of the invention so thatpresently preferred embodiments of the invention will be plainlydisclosed to one of skill in the art but are not intended to bemanufacturing level drawings or renditions of final products and mayinclude simplified conceptual views as desired for easier and quickerunderstanding or explanation of embodiments of the invention. As well,the relative size and arrangement of the components may be varied fromthat shown and the embodiments of the invention still operate wellwithin the spirit of the embodiments of the invention as describedhereinbefore and in the appended claims. Thus, various changes andalternatives may be used that are contained within the spirit of theembodiments of the invention.

Accordingly, the foregoing specification is provided for illustrativepurposes only, and is not intended to describe all possible aspects ofthe example embodiments of the invention. It will be appreciated bythose skilled in the art, that various changes in the ordering of steps,ranges, interferences, spacings, hardware, and/or attributes andparameters, as well as in the details of the illustrations orcombinations of features of the methods and system discussed herein, maybe made without departing from the spirit of the embodiments of theinvention. Moreover, while various embodiments of the invention havebeen shown and described in detail, those of ordinary skill in the artwill appreciate that changes to the description, and various othermodifications, omissions and additions may also be made withoutdeparting from either the spirit or scope thereof.

REFERENCES

The following references and those included in the Summary of Invention,to the extent that they provide exemplary procedural or other detailssupplementary to those set forth herein, are specifically incorporatedherein by reference.

U.S. Pat. No. 4,742,703

What is claimed is:
 1. A method for installing a barrel lock comprisinga body and a retractable locking member, the method comprising:inserting the barrel lock in hardware capable of receiving said barrellock; exerting an external force on said locking member; and causingsaid locking member to retract into said body so as to allow insertionof said barrel lock into said hardware.